<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <title>Modify Feature</title>
    <link rel="stylesheet" href="../theme/default/style.css" type="text/css" />
    <link rel="stylesheet" href="style.css" type="text/css" />
    <style type="text/css">
        #controls {
            width: 512px;
        }
        #controlToggle {
            padding-left: 1em;
        }
        #controlToggle li {
            list-style: none;
        }
    </style>
    <script src="../lib/Firebug/firebug.js"></script>
    <script src="../lib/OpenLayers.js"></script>
    <script type="text/javascript">
        var map, vectors, controls;
        function init(){
            map = new OpenLayers.Map('map');
            var wms = new OpenLayers.Layer.WMS( "OpenLayers WMS", 
                "http://labs.metacarta.com/wms/vmap0?", {layers: 'basic'}); 
            OpenLayers.Feature.Vector.style['default']['strokeWidth'] = '2';
            vectors = new OpenLayers.Layer.Vector("Vector Layer");

            map.addLayers([wms, vectors]);
            map.addControl(new OpenLayers.Control.LayerSwitcher());
            map.addControl(new OpenLayers.Control.MousePosition());
            
            function report(event) {
                OpenLayers.Console.log(event.type, event.feature.id);
            }
            vectors.events.on({
                "beforefeaturemodified": report,
                "featuremodified": report,
                "afterfeaturemodified": report
            });
            controls = {
                point: new OpenLayers.Control.DrawFeature(vectors,
                            OpenLayers.Handler.Point),
                line: new OpenLayers.Control.DrawFeature(vectors,
                            OpenLayers.Handler.Path),
                polygon: new OpenLayers.Control.DrawFeature(vectors,
                            OpenLayers.Handler.Polygon),
                regular: new OpenLayers.Control.DrawFeature(vectors,
                            OpenLayers.Handler.RegularPolygon,
                            {handlerOptions: {sides: 5}}),
                modify: new OpenLayers.Control.ModifyFeature(vectors)
            };
            
            for(var key in controls) {
                map.addControl(controls[key]);
            }
            
            map.setCenter(new OpenLayers.LonLat(0, 0), 3);
            document.getElementById('noneToggle').checked = true;
        }
        
        function update() {
            // reset modification mode
            controls.modify.mode = OpenLayers.Control.ModifyFeature.RESHAPE;
            var rotate = document.getElementById("rotate").checked;
            if(rotate) {
                controls.modify.mode |= OpenLayers.Control.ModifyFeature.ROTATE;
            }
            var resize = document.getElementById("resize").checked;
            if(resize) {
                controls.modify.mode |= OpenLayers.Control.ModifyFeature.RESIZE;
            }
            var drag = document.getElementById("drag").checked;
            if(drag) {
                controls.modify.mode |= OpenLayers.Control.ModifyFeature.DRAG;
            }
            // disable reshape mode if at least one of modes rotate, resize,
            // drag is enabled
            if (rotate || resize || drag) {
                controls.modify.mode &= ~OpenLayers.Control.ModifyFeature.RESHAPE;
            }
            var sides = parseInt(document.getElementById("sides").value);
            sides = Math.max(3, isNaN(sides) ? 0 : sides);
            controls.regular.handler.sides = sides;
            var irregular =  document.getElementById("irregular").checked;
            controls.regular.handler.irregular = irregular;
        }

        function toggleControl(element) {
            for(key in controls) {
                var control = controls[key];
                if(element.value == key && element.checked) {
                    control.activate();
                } else {
                    control.deactivate();
                }
            }
        }
        
    </script>
  </head>
  <body onload="init()">
    <h3 id="title">OpenLayers Modify Feature Example</h3>
    <div id="shortdesc">A demonstration of the ModifyFeature control for editing vector features.</div>
    <div id="map" class="smallmap"></div>
    <div id="controls">
        <ul id="controlToggle">
            <li>
                <input type="radio" name="type" value="none" id="noneToggle"
                       onclick="toggleControl(this);" checked="checked" />
                <label for="noneToggle">navigate</label>
            </li>
            <li>
                <input type="radio" name="type" value="point" id="pointToggle" onclick="toggleControl(this);" />
                <label for="pointToggle">draw point</label>
            </li>
            <li>
                <input type="radio" name="type" value="line" id="lineToggle" onclick="toggleControl(this);" />
                <label for="lineToggle">draw line</label>
            </li>
            <li>
                <input type="radio" name="type" value="polygon" id="polygonToggle" onclick="toggleControl(this);" />
                <label for="polygonToggle">draw polygon</label>
            </li>
            <li>
                <input type="radio" name="type" value="regular" id="regularToggle" onclick="toggleControl(this);" />
                <label for="regularToggle">draw regular polygon</label>
                <label for="sides"> - sides</label>
                <input id="sides" type="text" size="2" maxlength="2"
                       name="sides" value="5" onchange="update()" />
                <ul>
                    <li>
                        <input id="irregular" type="checkbox"
                               name="irregular" onchange="update()" />
                        <label for="irregular">irregular</label>
                    </li>
                </ul>
            </li>
            <li>
                <input type="radio" name="type" value="modify" id="modifyToggle"
                       onclick="toggleControl(this);" />
                <label for="modifyToggle">modify feature</label>
                <ul>
                    <li>
                        <input id="rotate" type="checkbox"
                               name="rotate" onchange="update()" />
                        <label for="rotate">allow rotation</label>
                    </li>
                    <li>
                        <input id="resize" type="checkbox"
                               name="resize" onchange="update()" />
                        <label for="resize">allow resizing</label>
                    </li>
                    <li>
                        <input id="drag" type="checkbox"
                               name="drag" onchange="update()" />
                        <label for="drag">allow dragging</label>
                    </li>
                </ul>
            </li>
        </ul>
    </div>
  </body>
</html>
